TF2 Map Crash

so, here is my problem:
i made a map for TF2 and it looks pretty good. The first time, i was testing the map, it works fine but after i added the control point ( it is a KOTH map) and some other stuff, the map crashes when sombody dies or sombody change his class.

i dont know how to solve this problem. First i tried to remove all things, i have changed before the first crash but this didnt worked.

I'm sure i've heard of a bug that causes maps to crash when there's nothing for players to spectate: i.e. when everyone dies or changes class. This is only when testing on public servers though. Are you testing on a public server, Jeckyll?